Flux pinning in Bi-2212 single crystals with various oxygen contents

被引：40

作者：

Li, TW ^{[1
]}

Menovsky, AA ^{[1
]}

Franse, JJM ^{[1
]}

Kes, PH ^{[1
]}

机构：

[1] UNIV AMSTERDAM,VAN DER WAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS

来源：

PHYSICA C | 1996年 / 257卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(95)00690-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Systematic variation of the oxygen concentration proved that oxygen vacancies in the CuO2 planes are indeed the predominant pinning centers in Bi2Sr2CaCu2O8+delta (Bi-2212) single crystals. Both the critical current density and the pinning energy increase proportional to the square root of the vacancy concentration. The change of the superconducting parameters, predominantly lambda(L)(0), in going from the overdoped to the optimally doped regime, gives rise to a considerable decrease of the critical current.

引用

页码：179 / 186

页数：8

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